specific identification of a unit. You should familiarize yourself
with the product, model, and serial numbers listed on each rating
plate. Record them for future reference in the space provided at the
end of this booklet.
IMPORTANT FACTS
To better protect your investment and to eliminate unnecessary
calls, familiarize yourself with the following facts:
1. Your air conditioning system should never be operated with-
out a clean air filter properly installed. Plan to inspect the filter
periodically. A clogged air filter will increase operating costs
and shorten the life of the unit.
2. Supply-air and return-air registers should not be blocked.
Drapes, furniture, and toys are some of the items commonly
found obstructing registers. Restricted airflow lessens the
unit’s efficiency and life span.
3. The outdoor unit must have unrestricted airflow. Do not cover
the unit, lean anything against it, or stand on it. Do not allow
grass clippings, leaves, or other debris to accumulate around
on top of the unit. Maintain a 30-in. minimum clearance
between the outdoor unit and tall grass, vines, shrubs, etc.
4. Your multipurpose indoor thermostat is the control center for
your heat pump system. You should familiarize yourself with
its proper operation. Attempting to control the system by other
means—for instance, switching the electrical supply power
ON and OFF—may cause damage to the unit (See Fig. 3).
5. You may find that you can maintain greater personal comfort
by running the fan continuously. “Air pockets” can form due
to the structure of the house, placement of registers, etc. air
pockets may be too cool or warm for your liking. Continuous
fan operation minimizes any temperature differences. Also,
systems equipped with electronic or mechanical air cleaners
and/or humidifiers offer the added benefits of having the air
continuously cleaned year-round and humidified during the
winter season.
6. Your air conditioner will remove humidity from your home
during the cooling season. After a few minutes of operation,
you should be able to see water trickle from the condensate
drain. Check this occasionally to be sure the drain system is
not clogged. Of course, don’t expect to see much drainage if
you live in a very dry environment.
FIRE AND ELECTRICAL HAZARD
Failure to follow this warning could result in personal injury,
death and/or property damage.
To prevent serious injury, death, or property damage, read
and follow all instructions and warnings, including labels
shipped with or attached to unit before operating your new
heat pump.
OPERATING YOUR AIR CONDITIONER
The operation of your air conditioning system is controlled by the
indoor thermostat. You simply adjust the thermostat and it
maintains the indoor temperature at the level you select. Most
thermostats for air conditioning systems have 3 controls: a
temperature control selector, a FAN control, and a SYSTEM or
MODE control.
COOLING MODE
When operating in cooling mode, your air conditioner will run in
cooling mode until the indoor temperature is lowered to the level
you have selected. On extremely hot days, your air conditioner will
run for longer periods at a time and have shorter “off” periods than
on moderate days.
The following are typical conditions that add extra heat and/or
humidity to your home. Your air conditioner will work longer to
keep your home comfortable under these conditions:
1. Entrance doors are frequently opened and closed
2. Laundry appliances are being operated
3. A shower is running
4. More than the usual number of people are present in the home
5. More than the normal number of electric lights are in use
6. Drapes are open on the sunny side of the home
HEATING CYCLE
If you own a packaged air conditioner that includes electric heat as
an accessory, you need to set your thermostat for heating when it
is desired.
With the SYSTEM switch of your indoor thermostat set to the
HEAT position, the heating section of your home comfort system
will operate until room temperature is raised to the level you have
selected. Of course, the heating unit will have to operate for longer
periods to maintain a comfortable environment on colder days and
nights than on moderate ones.
PERFORMING ROUTINE MAINTENANCE
With the proper maintenance and care, your air conditioner will
operate economically and dependably. Maintenance can be accom-
plished easily by referring to the following directions. However,
before performing maintenance, consider these important safety
precautions:
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury
and/or death.
Disconnect all electrical power to the indoor air handler or
furnace before removing access panels to perform any main-
tenance. Disconnect power to both the indoor and outdoor
units. Note: There may be more than 1 electrical disconnect
switch.
PERSONAL INJURY HAZARD
Failure to follow this caution may result in personal injury.
Although special care has been taken to minimize sharp edges
in the construction of your unit, to avoid injury be extremely
careful when handling parts or reaching into the unit.
CHECK THE AIR FILTER
A dirty air filter will cause excessive strain on the compressor and
blower motor. This can cause the components to overheat and
automatically shut down. In the worst case, the components will
Fig. 2—Carrier Non-Programmable Thermostat
2
